Required code signature missing for a library

The following command in the Podfile helped me:

post_install do |installer|    installer.pods_project.build_configurations.each do |config|        config.build_settings.delete('CODE_SIGNING_ALLOWED')        config.build_settings.delete('CODE_SIGNING_REQUIRED')    endend

Method 1

Add following code to your pod file

post_install do |installer|    installer.pods_project.build_configurations.each do |config|        config.build_settings.delete('CODE_SIGNING_ALLOWED')        config.build_settings.delete('CODE_SIGNING_REQUIRED')    endend

Method 2

Perform following steps

1. Delete application from mobile or simulator (wherever you are facing this issue).

2. Select slideMenuController.framework in project navigator, right click on it, an click show in Finder. Open _CodeSignature folder and delete all files except CodeResources.

3. Close Xcode, open Terminal and enter the following command

   rm -rf ~/Library/Developer/Xcode/DerivedData

   This will remove all derived data from xcode.

4. Open XCode, clean and run application. Hopefully, problem will be resolved.

I had same issue with my mac10.12.5 & Xcode 9, There seems to be issue with existing data at derived data location SO better just remove your derived data either by :

XCode>Prefrences>Locations>click on arrow at Derived Data location & delete it.

or either by writing this command on terminal: Make sure your xcode is in application or you mention your xcode location :

rm -rf ~/Library/Developer/Xcode/DerivedData

Now Open XCode, run application. Hopefully, problem will be resolved.Good luck...